boofcv.alg.sfm.structure2

Class GeneratePairwiseImageGraph

java.lang.Object

boofcv.alg.sfm.structure2.GeneratePairwiseImageGraph

public class GeneratePairwiseImageGraph
extends java.lang.Object

Given a graph of images with similar appearance, create a graph in which images with a geometric relationship are connected to each other. Determine if that relationship has 3D geometry or is composed of a homography. If there is a geometric relationship or not is determined by the number of inliers. The minimum number is specified by minimumInliers. A threshold is used for classifying an edge as 3D or not ratio3D len(F)/len(H) a value of 1 just requires equality, greater than one means there must be more features from F (fundamental) than H (homography).

Field Summary

Fields

Modifier and Type	Field and Description
PairwiseImageGraph2	graph
int	minimumInliers The minimum number of inliers for an edge to be accepted
double	ratio3D If number of matches from fundamental divided by homography is more than this then it is considered a 3D scene

Constructor Summary

Constructors

Constructor and Description
GeneratePairwiseImageGraph() Configures and declares concensum matching algorithms

Method Summary

Modifier and Type	Method and Description
protected void	createEdge(java.lang.String src, java.lang.String dst, org.ddogleg.struct.FastQueue<boofcv.struct.geo.AssociatedPair> pairs, org.ddogleg.struct.FastQueue<boofcv.struct.feature.AssociatedIndex> matches) Connects two views together if they meet a minimal set of geometric requirements.
PairwiseImageGraph2	getGraph()
int	getMinimumInliers()
double	getRatio3D()
void	process(LookupSimilarImages db) Connects images by testing features for a geometric relationship.
void	setMinimumInliers(int minimumInliers)
void	setRatio3D(double ratio3D)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

graph

public PairwiseImageGraph2 graph

minimumInliers

public int minimumInliers

The minimum number of inliers for an edge to be accepted

ratio3D

public double ratio3D

If number of matches from fundamental divided by homography is more than this then it is considered a 3D scene

Constructor Detail

GeneratePairwiseImageGraph

public GeneratePairwiseImageGraph()

Configures and declares concensum matching algorithms

Method Detail

process

public void process(LookupSimilarImages db)

Connects images by testing features for a geometric relationship. Retrieve the results using getGraph()

Parameters:

db - Images with feature associations

createEdge

protected void createEdge(java.lang.String src,
                          java.lang.String dst,
                          org.ddogleg.struct.FastQueue<boofcv.struct.geo.AssociatedPair> pairs,
                          org.ddogleg.struct.FastQueue<boofcv.struct.feature.AssociatedIndex> matches)

Connects two views together if they meet a minimal set of geometric requirements. Determines if there is strong evidence that there is 3D information present and not just a homography

Parameters:

src - ID of src image

dst - ID of dst image

pairs - Associated features pixels

matches - Associated features feature indexes

getGraph

public PairwiseImageGraph2 getGraph()

getMinimumInliers

public int getMinimumInliers()

setMinimumInliers

public void setMinimumInliers(int minimumInliers)

getRatio3D

public double getRatio3D()

setRatio3D

public void setRatio3D(double ratio3D)